Alphabetical printing mechanism



June 24, 1930.. w.w. LASKER 1,768,526

ALPHABETICAL PRINTING MECHANISM Filed June 26, 1929- l2ll0|23456789 'INVENTOR 66 m a. @M.

ATTORNEY ported in Patented June 24,1930

WILLIAM W. LASKER, OF BROOKLYN,

' INCORPORATED, OF NEW YORK,

NEW YORK, ASSIGNOR TO REMINGTON RAND N. Y., A CORPORATION OF DELAWARE ALPHABETICAL rnnv'rnvo MECHANISM Application filed June 26', 1929. SeriaI No. 373,852.

This invention relates to alphabetical printing mechanisms of the type shown in Letters Patent of the United States to Lasker $21,692,215, November 20, 1928.

The principal object of this invention is the provision otan improved pin basket construction in which the parts are readily assembled, and sure of operation.

The invention relates specifically'to improvements in means the home position stop in operative position and positive means for withdrawing said locking means upon a setting operation of the stop pins.

The improvements comprise other features of construction which will appear from the following description taken in connection with the drawing.

The figure of the drawing is a cross section through a pin basket with one side plate removed, showing one column of stop pins, a stop sector and'atype sector in side elevation.

In'this general type of machine, the adding and printing head comprises a plurality of units some of which add and print numbers and others of which print letters of the alphabet.

The alphabetical unit comprises a pin basket 10, a cooperating stop sector 11 and a type sector 12. o

The pin basket 10 includes any desired number of rows of stop pins generally indicated at 13. Each row of stop pins comprises twelve pins arranged in the order indicated on the drawings. The sector 11 carries a heel 1 1 cooperating directly with the stop pins in position eleven, and zero to eight. The twelve or home position of the sector is controlled by a stop lug 15 on a member 16 pivotally and slidably supported on a rod mounted in the side plates 17 which together with an upper stop pin guide plate 18 and a lower stop pin guide plate 19 constitute the frame of the pin basket. Only one of the side plates 17 is shown.

The stop lug 15 is held in its operative position by a slide 20 drawn to the left by a spring 21 anchored to a cross plate 22 supthe side plates 17 and provided at for positively locking its upper edge with teeth constituting guides for the members 16. The slides 20 are sup;- ported at their right-hand ends by a rod 23 mounted in the side plates 17 and at their other ends are provided with downwardly extending portions 24 slidable on the upper stop pin guide plate 18. The movement of the slides 20 toward the left is plate 25 supported in the side plates 17 and provided with an upwardly extending flange notched at 26 to provide guides for the members 16. The members 16 are urged counterclockwise by springs 27' suitably anchored to said members and spring hooks secured to the cross plate 22.

limited by a I The lower edge of the slide 20 is provided with a series of cams 30 one for each of:

the stop pins except the twelve pin. The stop pins carry laterally extending pins 31 shaped as shown for cooperation with the cams 30 on the slides 20. The nine pin does not extend into the path of the heel 14 of the stop sector 11. A common nine stop 32 supported in the side plates is provided to arrest the stop sectors inthe nine position when the nine stop pin is set.

When any one of the stop pins eleven and zero to nine is raised by mechanisms not shown here but well known in the art, the slide 20 is cammed to the right to free the member 16 which however will be held in the position shown by the spring 27. The setting or raising of the stop pin twelve will have no eflect on the member 16. The upper end of this .pin is extended into cooperative relation with a lever hook 33 pivoted on the stop sector 11 and normally in engagement with a lug 34 on the type seetor 12 extending through a long slot 35 in the stop sector 11. This engagement is maintained by a lever 36 mounted'on the 'stop sector 11 and spring pressed by a tension spring 37 connected to the type sector 12.

When the twelve pin is raised itwill cam the hook lever 33 out of engagement with the lu 3 1 and permit the type sector 12 to move orward twelve steps with respect to the stop sector llduring a subsequent part of the operation of the machine.

The sectors 11 and 12 are normally held in their home position by a bail 38. The type forward by sector 12 is urged counter-clockwise to position the type at the printing line by a spring 39 suitably anchored to a fixed part of the machine. The stop sector 11 is carried with the type sector by the lug 34 and lever hook 33. When the lever hook 33 is released, the type sector 12 is controlled to be projected the springs 37 and 39 to an extent of twelve steps.

The stop sector 11 .is released when any one of the stop pins eleven andzero to nine is 'set. The type sector 12 is released for twelve steps of forward movement with respect to the stop sector 11 when the twelvestolp pin is set. I

fter the stop pins have been set, the

' main shaft 40 is rocked forward clockwise by a means well known which movement through a link 41 rocks the bail 38 counterclockwise. If one of the pins eleven and zero to nine has been set, the spring 39 will move the stop sector 11 and type sector '12 counter-clockwise, and the slide 16 which is now free to pivot will be cammed clockwise. This movement of the sectors will continue until the heel 14 of the stop sector 11 will be arrested by a stop pin or the common nine stop. The impression will then be made and the parts restored in the usual manner. This is the operation when letters AL are positioned for printing.

When the twelve stop pin is set singly, the member 16 will be held locked and the stop sector 11 will be held in home position. This pin releases the type sector 12 from the stop sector 11 and, permits it to move forward twelve steps to present the first letter M of the second group MZ at the printing line.

When the twelve pin is set in combination with any other pin, the stop sector 11 will be arrested by the stop pins eleven and 'zero to eight or the common nine stop as usual and the type sector 12 will be permitted to move forward twelve steps with respect to the stop sector 11, to present letters N to Z to the printing line.

The important feature of this invention is in the provision of. a home position stop sector control which is positively locked in operative position and whose movements are in theplane of the stop sector. The slot in the slide 16 is provided for safety purposes which permits the slide to .be pushed to the left by the heel 14 in case the slide 20 has been moved under the slide 16 by. premature restoration of a stop pin. 1

What I claim as new and desire to secure by Letters Patent, is:

1. In mechanism of the character described,

. the combination of rows of stop pins, 2. home position stop for each row of stop pins, sectors controlled by said pins and stops, slides operatively mounted between adjacent rows of stop pins and normally locking said stops,

and means for moving each slide by a setting movement of any one'of the corresponding stop pins and thereby permitting withdrawal of said home position stop.

2. In mechanism of the character described, the combination of rows of stop pins, a home position stop for each row of stop pins, sectors,controlled by said pins and stops, slides operatively mounted between adjacent rows of stop pins and normally locking said stops, cams on said slides corresponding in number with said stop pins, and means on said stop pins cooperating with said slides to move said slides out of locking relation with said stops.

3. In mechanism of the character described, the combination of rows of stop pins, a home position stop for each row of stop pins, slides mounted between-adjacent rows of stop pins normally engaging and holding said home position stops in operative position, and

.means for withdrawing said slides from efi'ective position by movement of any corresponding stop pin.

4. In mechanism of the character described,

for withdrawing said means by a setting" movement of said stop pins, and a heel on said sector cooperating with said stop and v I stop pins, said heel and stop having cooperating surfaces functioning to depress said stop upon advancing movement of said sector.

Signed at Brooklyn in the county of Kings and State of New York this 21 day of June,

WILLIAM W. LASKER. 

